Red Stains and Dyes and Indicators

Alfa Aesar™ Chlorophenol Red sodium salt, 0.04% w/v aq. soln.

Chemical Name or Material: Chlorophenol Red sodium salt Formula Weight: 445.26 MDL Number: MFCD00151199

Alfa Aesar™ Sudan III

Chemical Name or Material: Sudan III CAS: 85-86-9 Molecular Formula: C22H16N4O Formula Weight: 352.4 MDL Number: MFCD00003905 Beilstein: 931185 Merck Index: 14,8884 Synonym: C.I. 26100; Solvent Red 23

Methyl Red sodium salt, 0.02% w/v Aqueous Solution, Alfa Aesar™

Chemical Name or Material: Methyl Red sodium salt CAS: 845-10-3 Physical Form: Liquid Assay Percent Range: 0.02% w/v Molecular Formula: (CH3)2NC6H4N=NC6H4CO2Na Formula Weight: 291.29 MDL Number: MFCD00002426

Alfa Aesar™ Sudan III (chromatographic standard)

Chemical Name or Material: Sudan III (chromatographic standard) CAS: 85-86-9 Molecular Formula: C22H16N4O Formula Weight: 352.4 MDL Number: MFCD00003905 Beilstein: 931185 Merck Index: 14,8884 Synonym: C.I. 26100; Solvent Red 23

Alfa Aesar™ Cresol Red

Chemical Name or Material: Cresol Red CAS: 1733-12-6 Molecular Formula: C21H18O5S Formula Weight: 382.44 MDL Number: MFCD00005878 Beilstein: 343399 Merck Index: 14,2578 Synonym: o-Cresolsulfonephthalein

Bromophenol Red, pure, ACROS Organics™

Chemical Name or Material: Bromophenol Red CAS: 2800-80-8 Purity Grade: Pure Molecular Formula: C19H12Br2O5S Formula Weight: 512.19 MDL Number: MFCD00023014 Synonym: 5', 5''-Dibromophenolsulfonphthalein

Alfa Aesar™ Cresol Red sodium salt

Chemical Name or Material: Cresol Red sodium salt CAS: 62625-29-0 Molecular Formula: C21H17NaO5S Formula Weight: 404.42 MDL Number: MFCD00001618 Synonym: o-Cresolsulfonephthalein sodium salt

Ruthenium Red tetrahydrate, pure, ACROS Organics™ Available on GSA/VA Contract for Federal Government customers only.

Chemical Name or Material: Ruthenium red tetrahydrate Name Note: Pure CAS: 12790-48-6 Purity Grade: Extra Pure Assay: 34.6 to 36.1% (ruthenium) Molecular Formula: Cl6H42N14O2Ru3·4H2O Linear Formula: {(NH3)5Ruoru(NH3)4oru(NH3)5}Cl6·4H2O Formula Weight: 858.35 MDL Number: MFCD00167176

Neutral Red (Certified Biological Stain), Fisher Chemical

Chemical Name or Material: Neutral Red CAS: 553-24-2 Purity Grade: Certified Biological Stain Molecular Formula: C15H17ClN4 Formula Weight: 288.78 MDL Number: MFCD00012651 Synonym: Basic Red 5

Alfa Aesar™ Methyl Red

Chemical Name or Material: Methyl Red CAS: 493-52-7 Molecular Formula: C15H15N3O2 Formula Weight: 269.3 MDL Number: MFCD00002425 Beilstein: 750102 Merck Index: 14,6119 Synonym: C.I. 13020

Cresol Red, Indicator Grade, Pure, ACROS Organics™

Chemical Name or Material: Cresol Red CAS: 1733-12-6 Purity Grade: Pure Molecular Formula: C21H18O5S Formula Weight: 382.42 MDL Number: MFCD00005878

Alfa Aesar™ Phenol Red sodium salt, 0.02% w/v aq. soln.

Chemical Name or Material: Phenol Red sodium salt Formula Weight: 376.37 MDL Number: MFCD00066901

Methyl Red, Free Acid (Certified), Fisher Chemical

Chemical Name or Material: Methyl Red, Free Acid CAS: 493-52-7 Purity Grade: Certified Grade Molecular Formula: C15H15N3O2 Linear Formula: 4-(CH3)2N-C6H4-N:N-2-(CO2H)C6H4 Formula Weight: 269.3 MDL Number: MFCD00002425 Synonym: Acid Red 2

Alfa Aesar™ Neutral Red, ACS

Chemical Name or Material: Neutral Red CAS: 553-24-2 Purity Grade: ACS Grade Molecular Formula: C15H17ClN4 Formula Weight: 288.78 MDL Number: MFCD00012651 Beilstein: 3918740 Merck Index: 14,6488 Synonym: Basic Red 5; C.I. 50040

Methyl Red, ACS reagent, ACROS Organics™

Chemical Name or Material: Methyl Red Name Note: Pure CAS: 493-52-7 Purity Grade: ACS Reagent Grade Molecular Formula: C15H15N3O2 Linear Formula: (CH3)2NC6H4N=NC6H4CO2H Formula Weight: 269.3 MDL Number: MFCD00002425 Synonym: 2-[4-(Dimethylamino)phenylazo]benzoic acid

Alfa Aesar™ Neutral Red

Chemical Name or Material: Neutral Red CAS: 553-24-2 Molecular Formula: C15H17ClN4 Formula Weight: 288.78 MDL Number: MFCD00012651 Beilstein: 3918740 Merck Index: 14,6488 Synonym: Basic Red 5; C.I. 50040

Methyl Red, Sodium Salt (Certified ACS), Fisher Chemical

Chemical Name or Material: Methyl Red, Sodium Salt CAS: 845-10-3 Purity Grade: Certified ACS Grade Molecular Formula: C15H14N3O2Na Linear Formula: 4-(CH3)2NC6H4-N:N-2-(CO2Na)C6H4 Formula Weight: 291.28 MDL Number: MFCD00002426 Synonym: Acid Red 2, Sodium Salt

Phenol Red sodium salt, ACS reagent, ACROS Organics™

Chemical Name or Material: Phenol Red sodium salt CAS: 34487-61-1 Purity Grade: ACS Reagent Grade Molecular Formula: C19H13NaO5S Formula Weight: 376.35 MDL Number: MFCD00066901

Cresol Red, Water Soluble, Indicator Grade, ACROS Organics™

Chemical Name or Material: Cresol Red, sodium salt CAS: 62625-29-0 Purity Grade: Pure Molecular Formula: C21H17NaO5S Formula Weight: 404.4 MDL Number: MFCD00001618

Neutral Red, pure, high purity biological stain, ACROS Organics™

Chemical Name or Material: Neutral red Name Note: High purity biological stain CAS: 553-24-2 Purity Grade: Extra Pure Molecular Formula: C15H17ClN4 Formula Weight: 288.77 MDL Number: MFCD00012651 Synonym: 3-Amino-7-dimethylamino-2-methylphenazine hydrochloride

Eosin B, Certified, Pure, ACROS Organics™ Available on GSA/VA Contract for Federal Government customers only.

Chemical Name or Material: Eosin B Name Note: Pure CAS: 548-24-3 Purity Grade: Pure Molecular Formula: C20H6Br2N2Na2O9 Formula Weight: 624.06 MDL Number: MFCD00005041 Synonym: 4', 5'-Dibromo-2', 7'-dinitrofluorescein

Eosin Y, 1% Solution in Water, ACROS Organics™

Chemical Name or Material: Eosin Y CAS: 17372-87-1 Molecular Formula: C20H6Br4Na2O5 Formula Weight: 691.85 MDL Number: MFCD00005040 Synonym: 2', 4', 5'

Para Red, Dye Content ca 95%, ACROS Organics™

Chemical Name or Material: Para Red CAS: 1647520 Purity Grade: Extra Pure Molecular Formula: C16H11N3O3 Formula Weight: 293.27 MDL Number: MFCD00003908 Synonym: 1-(4-Nitrophenylazo)-2-naphthol

Alfa Aesar™ Methyl Red sodium salt

Chemical Name or Material: Methyl Red sodium salt CAS: 845-10-3 Molecular Formula: C15H14N3NaO2 Formula Weight: 291.29 MDL Number: MFCD00002426 Beilstein: 4065488 Synonym: C.I. 13020; Methyl Red, water soluble

Quinaldine red, pure, ACROS Organics™

Chemical Name or Material: Quinaldine red Name Note: Pure CAS: 117-92-0 Purity Grade: Pure Molecular Formula: C21H23IN2 Formula Weight: 430.32 MDL Number: MFCD00011968 Synonym: 2-[4-(Dimethylamino)styryl]-1-ethylquinolinium iodide

Alfa Aesar™ Sudan IV

Chemical Name or Material: Sudan IV CAS: 85-83-6 Molecular Formula: C24H20N4O Formula Weight: 380.45 MDL Number: MFCD00003893 Merck Index: 14,8393 Synonym: C.I. 26105; Scarlet Red

Congo Red, Indicator grade, ACROS Organics™

Chemical Name or Material: Congo Red CAS: 573-58-0 Purity Grade: Indicator Grade Molecular Formula: C32H22N6Na2O6S2 Formula Weight: 696.66 MDL Number: MFCD00004028 Synonym: C.I. 22120

Phenolphthalein, 0.5% w/v in alcohol, Alfa Aesar™

Chemical Name or Material: Phenolphthalein CAS: 77-09-8 Physical Form: Liquid Molecular Formula: C20H14O4 Formula Weight: 318.33 MDL Number: MFCD00005913

Alfa Aesar™ Direct Red 80

Chemical Name or Material: Direct Red 80 CAS: 2610-10-8 Molecular Formula: C45H26N10Na6O21S6 Formula Weight: 1373.09 MDL Number: MFCD00054389 Synonym: C.I. 35780; Sirius Red

Alfa Aesar™ Methyl Red hydrochloride, ACS

Chemical Name or Material: Methyl Red hydrochloride CAS: 63451-28-5 Purity Grade: ACS Grade Formula Weight: 305.77 MDL Number: MFCD00012614 Synonym: 2-[4-(Dimethylamino)phenyl]azobenzoic acid

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